Kirby,
I don't know much about it, but do you already have all the border stuff written by Jerry Thompson: "Vaqueros in Blue and Gray", "Civil War & Revolution On The Rio Grande Frontier: A Narrative And Photographic History", "Mexican Texans in the Union Army", "Juan Cortina and the Texas-Mexico Frontier 1859-1877", "Cortina: Defending the Mexican Name in Texas", etc.?

Drew